Tiltable heater



FIG. 1 is a perspective view of a tiltable heater showing our new design;

FIG. 2 is a side view thereof, the opposite side being a mirror image of that shown;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a tiltable heater, as shown and described. 